A bug in platform handling was fixed in glibc, unfortunately kernel in 8.0
is broken and doesn't supply proper value for AT_PLATFORM in ELF aux vector.
Please try ftp://people.redhat.com/jakub/glibc/errata/8.0/
which has the glibc fix backed out.

Wow.. I consider this a pretty big problem for those who rely on the performance
benefits of a properly targeted glibc. Jakub - any idea if this warrants a
newly issued errata package (considering the amount of havoc the last update
seems to have created...)?